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N-COUNT
（尤指在国外代表政府的）全权代表，全权大使
A plenipotentiary is a person who has full power to make decisions or take action on behalf of their government, especially in a foreign country.
例句
...the Polish government in exile's plenipotentiary in Warsaw.
波兰流亡政府在华沙的全权代表
...the British Plenipotentiary to the UN conference.
英国在联合国大会的全权代表
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ADJ
（大使、公使等）全权的
An ambassador plenipotentiary or minister plenipotentiary has full power or authority to represent their country.
例句
She became Her Britannic Majesty's new ambassador plenipotentiary to the Republic of Lebanon...
她成为了英国女王陛下驻黎巴嫩共和国的新任全权大使。
Edwin H. Conger was envoy extraordinary and Minister Plenipotentiary.
埃德温·H. 康格是特命全权公使。
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ADJ
全（权）的
If someone such as an ambassador has plenipotentiary powers, they have full power or authority to represent their country.
例句
The Constitution grants the president plenipotentiary powers to use military force to protect our national security.
宪法赋予总统全权来使用武力保卫国家安全。